SA588 Gr A steel plate among our core products. As a trusted supplier of ASME SA588 GrA steel, we guarantee the delivery of high-quality, certified SA588 Grade A plates that meet international standards.

Steel Grade: ASME SA588 GrA
Steel Standard: ASME SA588 / SA588M
Thickness: 2 mm – 450 mm
Width: 1000 mm – 4200 mm
Length: 3000 mm – 18,000 mm
| V | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| SA588 Gr A | 0.19 | 0.80–1.25 | 0.04 | 0.05 | 0.30–0.65 | 0.40 | 0.40–0.65 | 0.25–0.55 | 0.02–0.10 | – | – |
| <100 mm | 485 | 345 | 21 | |
| >=100–125 mm | 460 | 315 | 21 | |
| >125–200 mm | 435 | 290 | 21 | |
| – | 485 | 345 | 21 |
Gnee SA588 Gr A steel plates are widely used in:
Industrial Equipment: Air preheaters and economizers, where temperatures reach up to 450℃ and steel requires both high strength and corrosion resistance.
Transportation: Railway carriages and shipping containers, benefiting from tensile strength >=485 MPa and yield strength >=345 MPa, ensuring safety and durability under heavy loads.
Infrastructure & Construction: Bridges, high-rise buildings, and structural frameworks, where the steel's elongation >=21% provides
flexibility against dynamic loads and vibrations.
Other Structural Uses: Heavy machinery, industrial plants, and engineering projects demanding long-term atmospheric corrosion resistance with maintenance intervals extended by up to 50% compared to ordinary carbon steel.
Why Choose Gnee SA588 GrA Steel Plates:
Certified Quality: Fully compliant with ASME SA588/SA588M standards, verified by chemical composition and mechanical testing reports.
High Strength & Durability: Tensile strength up to 485 MPa, yield strength up to 345 MPa, supporting heavy structural loads and minimizing deformation.
Corrosion & Weather Resistance: Advanced low-alloy composition forms a protective oxide layer, reducing corrosion rate to <0.03 mm/year in outdoor conditions, significantly lowering maintenance costs.
Versatile Treatments: Supplied in hot-rolled, cold-rolled, normalized, quenched & tempered, or TMCP processed forms, allowing customization for specific project requirements.
Advanced Manufacturing: Produced with precision rolling and modern heat treatment, ensuring dimensional tolerances within ±2 mm and consistent mechanical properties across large plates.








